Thill-iron.



I'. A. STRODBL.

THILL IRON. APPL'IOATION FILED AUG. 27, 1908.

905,113. Patented N0v.24,190a,

UNITED FRANK A. s'rRoDEL, or sYRAousE, NEW YORK, AssIeNoR 'ro CHRISTOPHER o. BRADLEY, sR.,

. s or sYRAoUsE, NEW YORK.

TEILE-IRON.

Specification of Letters Patent.

` Patented. Nov. 24, 1908.

Application led August 27, 1908.r Serial No. 450,540.

To all 'whom 'it may concern:-

Be it lmown that I,` FRANK A. STRODEL, of Syracuse, in the countyof Onondaga, in the State of New York, have invented new and useful Improvements in Thill-Irons, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description. y

This invention relates to certain improvements in thill irons as a new article of manufacture, involving the use of 'a brace which spans the chord of the arc or bend of the thill iron proper.

My object is to manufacture a thill iron with a brace loosely, but firmly, held in place by the spring tension of the strap iron to which it is attached, so thatV itmay be removed by springing the ends of the` strap out of interlocking engagement with the ends of the brace, thereby permitting the use of the thill iron with or without the brace as may be desired, and at the sametime, enabling the two parts to be manufactured and shipped in an assembled or knock-down condition.

Other objects and uses relating to specific parts of the thill Viron will be brought out in the following description.

In the drawings-Figure -1`- is a side elevation partly in section of a thill iron embodying my improvements. Fig. -2 is an inverted plan of the same. is a sectional view taken on line 3-3, Fig. -1-.

As shown in the drawings this `thill iron comprises a `curved strap or bar -1- of resilient metal and a brace -2, which may be made of wrought iron, steel or other suitable metal. V

The strap iron which is substantially flat and of uniform thickness throughout the greater portion of its length is adapted to be secured to the under side of a wood thill or pole in the manner well known, the rear end of said strap ironbeing formedwith an integral loop .-3- and coupling pin -4-', having a spherical knuckle -5-.-.

Suitable apertures 6 are formed in the strap iron -1- at opposite ends of the l arc for receiving reduced ends -7- of the brace -2--, which latter is preferably rounding in cross section. The reduced ends thickness of the metal strap 1 through which they project and form abutting shoulders #-8- which engage the inner face of the strap -1-.

Theap'ertures -6- are formed in the longitudinal center of the strap -1-, substantially-'radial to the arc or curvature, while the main body of the brace -2 extends lengthwise of the chord of said arc between the apertures t3- and has its opposite ends deflectedv laterally and substantially radial to the same arc, so that thereduced ends 7- enter the apertures 6- in substantially radial lines. A

The strap -1- is tensioned so as to spring inwardly against the shoulders -8- when the' reduced ends -7- are inserted in the apertures 6-, thereby serving to retain the brace -2- in operative position upon the strap -lwithout additional fastening by reason of the fact that the tension of the spring strap 1 tends to shorten the chord between the apertures -6-.

By constructing the thill iron in the manner just described, the combined strap and brace -2- may be made and sold as a separate article of manufacture and shipped to the trade either in an assembled or knockdown condition, it being understood that the reduced ends `7 of the brace -2- may be readily withdrawn from the apertures -6- by simply springing the ends of the strap -1---l outwardly to the position shown by dotted lines in Fig. -1-, thereby releasing the brace -2*.

This construction of thill iron enables the manufacturer of the thills or poles to use the strap -1- with or without the brace according to the work which may be required vor desired of the user.

What I claim iszf r 1. A thill iron comprising'a curved resilient strap of metal having apertures near the opposite ends of the curve and a brace eX- tending lengthwise of the chord of the curve and having its ends loosely inserted in said apertures and held in place by the resilient stra l 2. A thilliron comprising a curved metal strap having a coupling pin at one end and provided with apertures therethrough near opposite ends of the curve and a brace eK- -7- are of slightly greater length than the l, tending lengthwise of the chord of the curved portion of the strap and vhaw/ing its opposite In Witness whereof I have hereunto set my ends reduced' in size and'loosely inserted in hand this 24th day of August 1908.

said a ertnres the reduced ends formino` f s shouldrs near,V the ends of the brace, said FRANK A' SlRODPL' 5 strap having its opposite ends spring ten-y Titnessesi sioned'in the direction of the brace to retain H. E. CHASE,

said brace in operative position. CAROLINE MCCORMACK. 

